GSTBMIAQI Calculator is a free Android app developed by Kamal Charan, designed to calculate the total amount including goods and service tax based on 4 different tax slabs for various goods and services in India. The app also includes a BMI calculator which calculates the body mass index based on the height in meters/centimeters and weight in kilograms. Additionally, the app features an air quality index calculator that helps judge the condition of your environment and health hazards.

The app is user-friendly and easy to navigate, making it accessible to a wide range of users. With the ability to calculate tax, BMI and air quality index, GSTBMIAQI Calculator is an all-encompassing tool for anyone living in India. The app is compatible with Android 9.0 and is available for free download on the Google Play Store.